linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2017-10-14	RDMA/rxe: Suppress gcc 7 fall-through complaints	Bart Van Assche	1	-1/+1
	Avoid that gcc 7 reports the following warning when building with W=1: warning: this statement may fall through [-Wimplicit-fallthrough=] Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Cc: Moni Shoua <monis@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-07-24	IB/rxe: Use __func__ to print function's name	Kamal Heib	1	-2/+2
	Its better to use __func__ to print functions name instead of writing the name in the print statement. Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-12-12	IB/rxe: Wait for tasklets to finish before tearing down QP	Andrew Boyer	1	-0/+19
	The system may crash when a malformed request is received and the error is detected by the responder. NodeA: $ ibv_rc_pingpong -g 0 -d rxe0 -i 1 -n 1 -s 50000 NodeB: $ ibv_rc_pingpong -g 0 -d rxe0 -i 1 -n 1 -s 1024 <NodeA_ip> The responder generates a receive error on node B since the incoming SEND is oversized. If the client tears down the QP before the responder or the completer finish running, a page fault may occur. The fix makes the destroy operation spin until the tasks complete, which appears to be original intent of the design. Signed-off-by: Andrew Boyer <andrew.boyer@dell.com> Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2016-08-04	Soft RoCE driver	Moni Shoua	1	-0/+154
	Soft RoCE (RXE) - The software RoCE driver ib_rxe implements the RDMA transport and registers to the RDMA core device as a kernel verbs provider. It also implements the packet IO layer. On the other hand ib_rxe registers to the Linux netdev stack as a udp encapsulating protocol, in that case RDMA, for sending and receiving packets over any Ethernet device. This yields a RDMA transport over the UDP/Ethernet network layer forming a RoCEv2 compatible device. The configuration procedure of the Soft RoCE drivers requires binding to any existing Ethernet network device. This is done with /sys interface. A userspace Soft RoCE library (librxe) provides user applications the ability to run with Soft RoCE devices. The use of rxe verbs ins user space requires the inclusion of librxe as a device specifics plug-in to libibverbs. librxe is packaged separately. Architecture: +-----------------------------------------------------------+ \| Application \| +-----------------------------------------------------------+ +-----------------------------------+ \| libibverbs \| User +-----------------------------------+ +----------------+ +----------------+ \| librxe \| \| HW RoCE lib \| +----------------+ +----------------+ +---------------------------------------------------------------+ +--------------+ +------------+ \| Sockets \| \| RDMA ULP \| +--------------+ +------------+ +--------------+ +---------------------+ \| TCP/IP \| \| ib_core \| +--------------+ +---------------------+ +------------+ +----------------+ Kernel \| ib_rxe \| \| HW RoCE driver \| +------------+ +----------------+ +------------------------------------+ \| NIC driver \| +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +-----------------------------------------------------------+ \| Application \| +-----------------------------------------------------------+ +-----------------------------------+ \| libibverbs \| User +-----------------------------------+ +----------------+ +----------------+ \| librxe \| \| HW RoCE lib \| +----------------+ +----------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +--------------+ +------------+ \| Sockets \| \| RDMA ULP \| +--------------+ +------------+ +--------------+ +---------------------+ \| TCP/IP \| \| ib_core \| +--------------+ +---------------------+ +------------+ +----------------+ Kernel \| ib_rxe \| \| HW RoCE driver \| +------------+ +----------------+ +------------------------------------+ \| NIC driver \| +------------------------------------+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Soft RoCE resources: [1[ https://github.com/SoftRoCE/librxe-dev librxe - source code in Github [2] https://github.com/SoftRoCE/rxe-dev/wiki/rxe-dev:-Home - Soft RoCE Wiki page [3] https://github.com/SoftRoCE/librxe-dev - Soft RoCE userspace library Signed-off-by: Kamal Heib <kamalh@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: Moni Shoua <monis@mellanox.com> Reviewed-by: Haggai Eran <haggaie@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>